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Introduction SECTION 1 Purpose
Type of Data Considered
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assignable causes ASTM cell boundaries cell midpoints chart for averages chart for individuals CN CN CN coefficient of variation confidence limits control chart lines control chart method controlled conditions cumulative frequency curve data of Table defects per unit denatured alcohol Equal Size Section essential information estimate Example expected value factors fraction defective frequency histogram gives the control grouped frequency distribution inspection kurtosis Line Control Limits Lot Number Manual material moving range Normal distribution Number FIG number of defects number of observations number of units obtained under controlled percent Presentation of Data Quality Control rational subgroups relative frequency Results—Lack of control Sample Number sample size sample standard deviation Samples of Equal Samples of Unequal sets of observations Shewhart skewness Small Samples specific square root standard given standard values successive lots tensile strength tion total information total number Transverse Strength Unequal Size Section universe variability